Melody

How many significant figures?

what is 3.1536e16 in sigfigs?

Also, if this is a calc read it probably means    $${\mathtt{3.153\: \!6}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{16}}}$$

otherwise it may mean         $${\mathtt{3.153\: \!6}}{\mathtt{\,\times\,}}{{\mathtt{e}}}^{{\mathtt{16}}} = {\mathtt{28\,023\,238.137\: \!473\: \!627\: \!147\: \!295\: \!9}}$$  

Because Carl and Megan are butterflies and thay are saving the apples for their babies.

And you thought human babies were demanding. You should try feeding a family of caterpillars!

deleted deleted

There is no graph 

You need to be a member to post pics.

Thanks Alan I didn't notice that.

I wasn't trying to be smart.  I was just answering the question in an attempt to learn from it. I am new to modulo arithmetic.

Kes,

Could you please put just one question per post.

Thanks :)

 @@ End of Day Wrap   Fri 31/7/15     Sydney, Australia Time   2:12am   (really Sat)  ♪ ♫

Hi everyone,

Our wonderful answerers have been Alan, CPhill, TitaniumRome, Heureka, Headingnorth, Biotomic121, Radix and Geno3141.  Thank you.  

Hi Kes 1968:)

Let Neha travel at N km/hr  for T hours.   So she will travel a total distance of N*T km

Sonia drives at (N+4) km/hour for (T+1) hour.   So she will travel a total of  (N+4)(T+1) km

Sonia drives 60km more than Neha so

(N+4)(T+1) - NT = 60

NT+N+4T+4-NT=60

N+4T+4=60

N+4T=56    (1)

Archana drives at (N+8)km/hr  for (T+2) hours.  So she travels a total of (N+8)(T+2) km

she will drive (N+8)(T+2) - NT    further than Neha

(N+8)(T+2) - NT

=NT+2N+8T+16-NT

=2N+8T+16

=2(N+4T)+16

sub in  (1)

=2*56+16

=112+16

=128km

Archan will drive 128km further than Neha      

$${\frac{{\mathtt{30}}}{{\mathtt{100}}}}{\mathtt{\,\times\,}}{\mathtt{12}} = {\frac{{\mathtt{18}}}{{\mathtt{5}}}} = {\mathtt{3.6}}$$

$3.60